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Small white-marmorated longhorn beetle

Small white-marmorated longhorn beetle

Monochamus sutor

A species of Sawyers

Monochamus sutor is a species of beetle in the family Cerambycidae. It was described by Carl Linnaeus in 1758, originally under the genus Cerambyx. It has a wide, natural distribution throughout Europe, and has also been introduced into Belgium and the Netherlands. Adults measure between 15 to 24 mm (0.59 to 0.94 in), and larvae measure up to 45 mm (1.8 in).

General Info About Small white-marmorated longhorn beetle
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Attributes of Small white-marmorated longhorn beetle
Colors
Black
Yellow
Gray
Habitat
Mixed deciduous and coniferous woodland
Adult Food Sources
Tree sap, bark, leaves, needles, twig tissue
Larva Food Source
Coniferous tree wood, pine (pinus sp.), spruce (picea sp.), fir (abies sp.), larch (larix sp.)
Biting/stinging
Not reported
Allergy-causing
Not reported
Pollinator
Not reported
Pest-Eating Predatory
Not reported
Phytophagous
The Small white-marmorated longhorn beetle feeds on plants, usually without causing significant harm. However, it's important to take the situation seriously if their numbers begin to increase significantly.
Predatory
Not reported
Biting animal or pet
Not reported
Mouthparts Type
Chewing mouthparts
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Species Status of Small white-marmorated longhorn beetle
Common
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Distribution Area of Small white-marmorated longhorn beetle
Europe, Belgium, the Netherlands
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Life Cycle of Small white-marmorated longhorn beetle
Egg During the egg stage, the small white-marmorated longhorn beetle lays dormant, encapsulated in a protective shell. The size is minute and the color often blends with the environment for concealment.
Larva As larvae, small white-marmorated longhorn beetles exhibit elongated bodies with a voracious appetite for host materials. They lack wings and are primarily legless, with a soft, often creamy-white body.
Pupal In the pupal stage, the small white-marmorated longhorn beetle is immobile and undergoes transformation. Encased in a pupal chamber, it's a transition phase where tissues and organs reorganize.
Adult Emerging from the pupa, the adult small white-marmorated longhorn beetle’s development is marked by the presence of wings and functional reproductive organs. The body is fully formed and hardened, and the adult is mobile, focusing on reproduction.
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Predators of Small white-marmorated longhorn beetle Larvae
Woodpeckers, nuthatches, bark foraging birds, carnivorous beetles, rodents
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Scientific Classification of Small white-marmorated longhorn beetle
Tips for Finding Small white-marmorated longhorn beetle
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Youth Habitat of Small white-marmorated longhorn beetle
Forests and Woodlands, Rotting and Decaying Matter
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Adult Habitat of Small white-marmorated longhorn beetle
Forests and Woodlands
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How Can You Attract Small white-marmorated longhorn beetle
To trap small white-marmorated longhorn beetle, one might use pheromone traps or bait containing host tree volatiles since they are attracted to the chemicals emitted by stressed or dying trees.
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Habitat Preferences of Small white-marmorated longhorn beetle Through Different Life Stages
The larvae of small white-marmorated longhorn beetle are typically found burrowed in coniferous trees, especially in the pine, spruce, and fir species where they feed on the wood, creating tunnels. To look for the larvae, one would search in forests, specifically investigating these trees for signs of larval activity such as exit holes or frass. The adult small white-marmorated longhorn beetle, on the other hand, can be found on or near the same host trees during the mating season, which is the best time to observe them. They might also be attracted to areas with freshly cut timber or weakened trees, where they lay their eggs in crevices of the bark. To find adults outside of the mating season, exploring woodland edges and clearings where these trees are present would be advisable.
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How and Where Can You Find Small white-marmorated longhorn beetle at Different Life Stages
Larva Larvae of small white-marmorated longhorn beetle bore into wood, so finding them involves searching for exit holes and sawdust-like frass on the bark of trees such as pines. One may have to peel back bark or use a probe in boreholes to locate them.
Pupal Pupae of small white-marmorated longhorn beetle are typically found in the same wooden habitats as larvae. Locating them requires searching for pupal chambers, which may be just under the bark or deeper within the wood, depending on the age of the pupae.
Adult Adult small white-marmorated longhorn beetle are often found on or near host trees. Searching tree trunks, branches, and the surrounding foliage during their active periods is a safe way to locate them. Adults can also be found near lights at night.
Are Small white-marmorated longhorn beetle harmful?
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Harmful Effects of Small white-marmorated longhorn beetle
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Forestry Pest

Small white-marmorated longhorn beetle can lead to mild to severe damage in coniferous forests, depending on the pest population. Larvae bore into stems, disrupting the flow of nutrients, while adults spread diseases. Large numbers may lead to tree death, affecting forest health and possibly impacting timber industries.

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